Results 11 to 20 of about 41,492 (221)
Atmospheric benzene observations from oil and gas production in the Denver-Julesburg Basin in July and August 2014 [PDF]
, 2016 High time resolution measurements of volatile organic compounds (VOCs) were collected using a proton-transfer-reaction quadrupole mass spectrometry (PTR-QMS) instrument at the Platteville Atmospheric Observatory (PAO) in Colorado to investigate how oil ...
Adgate +69 more
core +1 more source
Response Of The Dupi Tila Aquifer to intensive pumping in Dhaka, Bangladesh [PDF]
, 2003 This paper focuses on the water-quantity issues facing Dhaka because of the rapid exploitation of the Dupi Tila aquifer. Dhaka is one of the world’s largest groundwater-dependent cities, relying on water withdrawn from this underlying semiconfined sand ...
Kazi, Matin Ahmed +2 more
core +1 more source
Geofluids, 2020 The compound dynamic disaster of coal and gas outbursts and rockburst is a typical hazard jeopardizing the mining of the high gas content coal seam under a hard roof condition.
Litong Dou +3 more
doaj +1 more source
Kerf Taper Defect Minimization Based on Abrasive Waterjet Machining of Low Thickness Thermoplastic Carbon Fiber Composites C/TPU [PDF]
, 2019 Carbon fiber-reinforced thermoplastics (CFRTPs) are materials of great interest in industry. Like thermosets composite materials, they have an excellent weight/mechanical properties ratio and a high degree of automation in their manufacture and ...
Alejandro Sambruno +9 more
core +2 more sources
Organic compounds in hydraulic fracturing fluids and wastewaters: A review [PDF]
, 2017 High volume hydraulic fracturing (HVHF) of shale to stimulate the release of natural gas produces a large quantity of wastewater in the form of flowback fluids and produced water.
Gonsior, Michael, Luek, Jenna L.
core +3 more sources
Development and Field Test of the Same-Frequency Different-Phase Compound Impact Tool
Shiyou jixie, 2023 A same-frequency different-phase compound impact tool was developed to improve the rock-breaking efficiency of PDC bits in hard formations, increase the penetration depth of cutters, and eliminate the “stick-slip” phenomenon of the downhole bit.The ...
Ye Daohui +5 more
doaj
Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM [PDF]
, 2019 The use of composite materials with a polymeric matrix, concretely carbon fiber reinforced polymer, is undergoing further development owing to the maturity reached by the forming processes and their excellent relationship in terms of specific ...
Batista Ponce, Moisés +3 more
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Shiyou jixie, 2023 The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue +5 more
doaj
Latitudinal differences in the amplitude of the OAE-2 carbon isotopic excursion: pCO2 and paleoproductivity [Discussion paper] [PDF]
, 2011 A complete, well-preserved record of the Cenomanian/Turonian (C/T) Oceanic Anoxic Event 2 (OAE-2) was recovered from Demerara Rise in the southern North Atlantic Ocean (ODP site 1260).
Bentum, Elisabeth C. van +3 more
core +1 more source
Shiyou jixie, 2023 Previous researches on rock-breaking efficiency under compound impact neglect the effects of the phase difference between axial and torsional impact loads.Therefor,such effects were discussed.The single-cutter rock-breaking numerical model of PDC bit ...
Xi Yan +5 more
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